Method for planting corn by partially replacing chemical fertilizer with organic fertilizer

Abstract

The invention discloses a method for planting corn by partially replacing a chemical fertilizer with an organic fertilizer. The method specifically comprises the following steps: a planting field is deeply ploughed; the amount of the organic fertilizer applied to the planting field per mu is 45-55 kg, and the organic fertilizer and the chemical fertilizer are mixed in the proportion of (1-1.75):1 to prepare a mixed fertilizer; the mixed fertilizer is mixed with the soil of the corn planting field, and meanwhile, film mulching and sowing are carried out; when the corn seedlings grow to have 5-6 leaves, 15-20 kg of urea is applied to each mu of the corn seedlings, and when the corn seedlings grow to have 10-12 leaves, 15-20 kg of urea is applied to each mu of the corn seedlings; weeds are removed irregularly in the corn growth period; and the corn is regularly harvested after ripening. According to the invention, the plant height, stem diameter, grain number per ear and thousand seed weight of corn can be increased, the quality and yield of corn can be improved, the conditions of water, fertilizer, gas and heat of soil can be effectively improved, the content of effective nutritional ingredients of the soil is increased, the fertilizer supply capacity of the soil is improved, the use amount of the chemical fertilizer is reduced, and the technical progress is great.

Description

technical field [0001] The invention relates to the technical field of agricultural fertilizers, in particular to a method for planting corn with organic fertilizers partially replacing chemical fertilizers. Background technique [0002] Corn is the largest food crop in my country. It is the food crop with the fastest development, the highest self-sufficiency rate, the most obvious production advantages, the largest production increase potential and the largest growth space for consumption demand among all kinds of staple food crops in China. In recent years, in order to increase the yield of corn, a large amount of chemical fertilizers have been used when planting corn. Firstly, it will increase the cost of planting. Secondly, excessive use of chemical fertilizers will cause the soil environment to deteriorate and produce inferior agricultural products. In addition, the utilization rate of fertilizers in our country is decreasing year by year, and the partial replacement of...

AI Technical Summary

Problems solved by technology

In recent years, in order to increase the yield of corn, a large amount of chemical fertilizers have been used when planting corn. Firstly, it will increase the cost of planting. Secondly, excessive use of chemical fertilizers will cause the deterioration of the soil environment and produce inferior agricultural products.

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